1. S. D. Korovin, I. K. Kurkan, V. V. Rostov, and E. M. Tot’meninov, Radiophys. Quantum Electron. 42, 1047 (1999).
2. S. D. Korovin, S. D. Polevin, A. M. Roitman, and V. V. Rostov, Pis’ma Zh. Tekh. Fiz. 18 (8), 63 (1992).
3. N. F. Kovalev and V. I. Petrukhina, Elektron. SVCh, No. 7, 102 (1977).
4. Z. Chen, J. Wang, Y. Wang, H. Qiao, D. Zhang, and W. Guo, Phys. Plasmas 20, 113103 (2013).
5. V. P. Tarakanov, in Mathematical Modeling. Problems and Results (Nauka, Moscow, 2003), pp. 456–476.